Ask for records from the first priority list. If any such record is readily available (i.e., within 10 working days of the request), you must obtain it. Note that, except for the Canadian delayed birth record, all documents in C. below must be domestic records.

Domestic or Canadian delayed birth record established before age 55 (whether or not the basis of the record is shown, unless, if the basis is shown, it contains a DB discrepancy on its face (see GN 00302.540))

A marriage record established before age 36 may be substituted for the other SSA record where a NUMIDENT record does not exist (see GN 00302.100 D. and GN 00302.120) if it corroborates one of the first 5 documents listed above, and if the marriage record substantially agrees with the allegation.

When only the claimant's age appears on the marriage record, at least one other supportive document must show month and year of birth. If the claimant alleges a DB on the first or, if material, the second day of the month, the day must also be shown; the day must also be shown if the individual is an SSI applicant whose first month of eligibility is the month of attainment of age 65.